Calender



Nov. 20, 1928.

E. WERNER CALENDER Filed Dec. 16. 1927 m a 1 nu H mwmmmmmmwww llllll l NH lH PHHUfl HHIJ lllllllllllllll l I. lllllllllll I10 "mmmmwmwmmmwwmmmmmmwm r/WW; W W

UNITED STATES PATENT OFFICE.

ERNST WERNER, QF OBERLANGENB Application filed. December 16, 1927,

inLAU, GERMANY.

CALENDER.

This invention relates to calendering machines having a ers adapted to layers of fabric and to culiar appearance.

plurality of calendering rolloperate upon superimposed give the fabric a p This use of the calendering rollers makes it possible for the fabric to be refined in an uninterrupted operation.

Now as the web of the fabric during each calendering operation passes one roller with one of its faces towardsthe roller and the next roller with the aforementioned face away from the roller, the fabric will be drawn. Compensation must, therefore, be 11 ade for the drawing before the web enters the calendering rolls again. Heretofore this compensation has been secured guide rollers on springthe lower guide rollers operator. This arrang bymoun ting the upper actuated swing levers, being adjusted by the ement limits the maximum speed of the web during operation to 40 meters per minute and the number of layers passing through the calendering rolls to 6. As is well known, greater economy can be attained by increasing the speed of the web and a better calendering tained by having more 1 ed simultaneously.

Attempts have been eliminate the drawbacks of the fabric can be obayers of the web treatmade in the past to pointed out above,

but have met with comparatively little suc- CGSS.

fabric to a greater heretofore.

To achieve this object I arrange the upper under the other. The

extent than has been done propose to fixedly guide rollers in pairs one web of fabric in be ing guided past the rollers forms a slack between each pair. a third roller in each third roller having As a result of I further propose to hang slack of the web, the

a free vertical movement. my arrangement, the calendering machine can operate without disturbance upon 10 or more 1 neously at a speed of minute.

ayers of web simultato meters per A side view of an embodiment of the subject matter of this inve way of example in the ing.

ntion is illustrated by accompanying draw The calendering machine illustrated c0mprises eight calenderi ng rollers, (1 to 8) mounted for rotation in rality of guide rollers 10 are arranged in staggered relation to one another, as shown, at the level of roller 8. Rollers 1'1 correspond ing to rollers 10 are alsoarraiiged in staggered relation at the level of roller 1. Just to the side and underneath each guide roller 10 is an intermediate guidei'oller 12. The web of fabric enters the calendering machine at 13, passes over a roller 14-, and travels through rollers 1 to 8 from bottom to top. The web portion 18 upon leaving the calen dering rollers passes over the outermost guide roller 10 and a slackbetween the two, and is led back over the respective roller 11 and lowermost roller 15 to the lowermost calende ing roller 1.

Now he fabric travels a second time through the calendering machine. Portion 19 of the web denotes that part which has just left the calendering rollers for the second time. Portion 19 is led over the DGXL to the last guide roller 10 and appurtenant roller 12, forming a slack between the two, then the respective rollers 11 and 15 back to the lowermost calendering roller 1.

In this manner, the fabric travels through the calendering machine again and again in ten rounds (18 to 27) and is finally led from the upper calendering roller 8 and rewound on reel 16.

Compensating rollers 17 are hung in the slack portions of the web formed between the rollers 10 and 12, are free to move in a vertical direction, and may be guided in any desired manner in the machine frame.

As the entire space between the upper and lower guide rollers 10 and 11 is at disposal for the formation of slacks, a compensation may be made between the successive calendering operations which corresponds to twice the distance between the upper and lower guiding rollers. In this way, 10 or more web layers a frame 9. plumay be passed between the calendering rollers a without any disturbance in operation arising too web between layers also makes it possible for the machine to travel at a speed double that of known machines.

I Wish it understood that my invention is not limited to any specific construction or arrangement oi the parts except in so far as such limitations are specified in the appended claims.

Having thus described my invention, 1 claim:

1. The combination in a. calendering machine ot' a set of calendering rollers adapted to operate on superimposed layers or a continuous Web of fabric, a set or upper guiding rollers and a set oi lower guiding rollers one of each set oft upper and lower guiding roller-s being associated with a corresponding layer of. said Web and'adapted to guide said layer in its course from one passage throng i said calen dering rollers to the next, an intermediate guide roller arranged immediately underneath each of said upper guiding rollers and receiving the Web eomi .irom the appurtenant upper guiding roller in such a way that a slack is formed in the web between it and said appurtenant upper gui ling roller, and means for compensating for said slack.

2. In a machine of the class described, a set of calendering rollers for operating upon superimposed layers of a continuous web, a set 0i upper guiding rollers, each or said guiding rollers receiving one of said layers as it leaves said calenderin'g rollers, a set of intermediate guiding rollers arranged in st a gored relation underneath said upper gui ing rollers, each of said last named rollers receiving one of said layers after it passes the appurtenant upper guiding roller, a set of lower guiding rollers, each adapted to guide one of said layers from a respective intermediate guiding roller back to said calender-lug rollers, and another set of 1O1'lTS,GLCl1 of said last-named rollers being hung in a loop formed by the slack in the Web between said upper and intermediate guiding rollers.

3. In a machine of the class described a set of calendering rollers for operating upon superimposed layers of a continuous Web, an upper guiding roller receiving said Web as it leaves said calendering rollers, an intermediate guiding roller arranged immediatelybelovv said upper guiding roller and receiving said web after it passes said upper guiding roller, a lower guiding roller for guiding said -web from said int'err iediate roller back to said ealendering rollers and a roller hung in the loop of said web formed between said upper and intermediate guiding rollers.

4t. A machine according to claim '1, in'which said means comprises'a roller hung in the loop formed by said slack and having a free vertical movement.

In testimony cation is signed.

whereof the foregoing speciti ERNST lVERNER. 

